#! /usr/bin/env perl
-# Copyright 2018 The OpenSSL Project Authors. All Rights Reserved.
+# Copyright 2018-2021 The OpenSSL Project Authors. All Rights Reserved.
#
-# Licensed under the OpenSSL license (the "License"). You may not use
+# Licensed under the Apache License 2.0 (the "License"). You may not use
# this file except in compliance with the License. You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html
+use strict;
+use warnings;
+
use lib '.';
use configdata;
+use File::Spec::Functions qw(:DEFAULT rel2abs);
use File::Compare qw(compare_text);
+use feature 'state';
+
+# When using stat() on Windows, we can get it to perform better by avoid some
+# data. This doesn't affect the mtime field, so we're not losing anything...
+${^WIN32_SLOPPY_STAT} = 1;
+my $debug = $ENV{ADD_DEPENDS_DEBUG};
my $buildfile = $config{build_file};
-my $buildfile_new = "$buildfile.$$";
+my $build_mtime = (stat($buildfile))[9];
+my $rebuild = 0;
my $depext = $target{dep_extension} || ".d";
-my @deps =
- grep { -f $_ }
+my @depfiles =
+ sort
+ grep {
+ # This grep has side effects. Not only does if check the existence
+ # of the dependency file given in $_, but it also checks if it's
+ # newer than the build file, and if it is, sets $rebuild.
+ my @st = stat($_);
+ $rebuild = 1 if @st && $st[9] > $build_mtime;
+ scalar @st > 0; # Determines the grep result
+ }
map { (my $x = $_) =~ s|\.o$|$depext|; $x; }
- grep { $unified_info{sources}->{$_}->[0] =~ /\.cc?$/ }
- keys %{$unified_info{sources}};
+ ( ( grep { $unified_info{sources}->{$_}->[0] =~ /\.cc?$/ }
+ keys %{$unified_info{sources}} ),
+ ( grep { $unified_info{shared_sources}->{$_}->[0] =~ /\.cc?$/ }
+ keys %{$unified_info{shared_sources}} ) );
+
+exit 0 unless $rebuild;
+
+# Ok, primary checks are done, time to do some real work
+
+my $producer = shift @ARGV;
+die "Producer not given\n" unless $producer;
+
+my $srcdir = $config{sourcedir};
+my $blddir = $config{builddir};
+my $abs_srcdir = rel2abs($srcdir);
+my $abs_blddir = rel2abs($blddir);
+
+# Convenient cache of absolute to relative map. We start with filling it
+# with mappings for the known generated header files. They are relative to
+# the current working directory, so that's an easy task.
+# NOTE: there's more than C header files that are generated. They will also
+# generate entries in this map. We could of course deal with C header files
+# only, but in case we decide to handle more than just C files in the future,
+# we already have the mechanism in place here.
+# NOTE2: we lower case the index to make it searchable without regard for
+# character case. That could seem dangerous, but as long as we don't have
+# files we depend on in the same directory that only differ by character case,
+# we're fine.
+my %depconv_cache =
+ map { catfile($abs_blddir, $_) => $_ }
+ keys %{$unified_info{generate}};
+
+my %procedures = (
+ 'gcc' => undef, # gcc style dependency files needs no mods
+ 'makedepend' =>
+ sub {
+ # makedepend, in its infinite wisdom, wants to have the object file
+ # in the same directory as the source file. This doesn't work too
+ # well with out-of-source-tree builds, so we must resort to tricks
+ # to get things right. Fortunately, the .d files are always placed
+ # parallel with the object files, so all we need to do is construct
+ # the object file name from the dep file name.
+ (my $objfile = shift) =~ s|\.d$|.o|i;
+ my $line = shift;
+
+ # Discard comments
+ return undef if $line =~ /^(#.*|\s*)$/;
+
+ # Remove the original object file
+ $line =~ s|^.*\.o: | |;
+ # Also, remove any dependency that starts with a /, because those
+ # are typically system headers
+ $line =~ s/\s+\/(\\.|\S)*//g;
+ # Finally, discard all empty lines
+ return undef if $line =~ /^\s*$/;
+
+ # All we got now is a dependency, just shave off surrounding spaces
+ $line =~ s/^\s+//;
+ $line =~ s/\s+$//;
+ return ($objfile, $line);
+ },
+ 'VMS C' =>
+ sub {
+ state $abs_srcdir_shaved = undef;
+ state $srcdir_shaved = undef;
+
+ unless (defined $abs_srcdir_shaved) {
+ ($abs_srcdir_shaved = $abs_srcdir) =~ s|[>\]]$||;
+ ($srcdir_shaved = $srcdir) =~ s|[>\]]$||;
+ }
+
+ # current versions of DEC / Compaq / HP / VSI C strips away all
+ # directory information from the object file, so we must insert it
+ # back. To make life simpler, we simply replace it with the
+ # corresponding .D file that's had its extension changed. Since
+ # .D files are always written parallel to the object files, we
+ # thereby get the directory information for free.
+ (my $objfile = shift) =~ s|\.D$|.OBJ|i;
+ my $line = shift;
+
+ # Shave off the target.
+ #
+ # The pattern for target and dependencies will always take this
+ # form:
+ #
+ # target SPACE : SPACE deps
+ #
+ # This is so a volume delimiter (a : without any spaces around it)
+ # won't get mixed up with the target / deps delimiter. We use this
+ # to easily identify what needs to be removed.
+ m|\s:\s|; $line = $';
+
+ # We know that VMS has system header files in text libraries,
+ # extension .TLB. We also know that our header files aren't stored
+ # in text libraries. Finally, we know that VMS C produces exactly
+ # one dependency per line, so we simply discard any line ending with
+ # .TLB.
+ return undef if /\.TLB\s*$/;
+
+ # All we got now is a dependency, just shave off surrounding spaces
+ $line =~ s/^\s+//;
+ $line =~ s/\s+$//;
+
+ # VMS C gives us absolute paths, always. Let's see if we can
+ # make them relative instead.
+ $line = canonpath($line);
+
+ unless (defined $depconv_cache{$line}) {
+ my $dep = $line;
+ # Since we have already pre-populated the cache with
+ # mappings for generated headers, we only need to deal
+ # with the source tree.
+ if ($dep =~ s|^\Q$abs_srcdir_shaved\E([\.>\]])?|$srcdir_shaved$1|i) {
+ $depconv_cache{$line} = $dep;
+ }
+ }
+ return ($objfile, $depconv_cache{$line})
+ if defined $depconv_cache{$line};
+ print STDERR "DEBUG[$producer]: ignoring $objfile <- $line\n"
+ if $debug;
+
+ return undef;
+ },
+ 'VC' =>
+ sub {
+ # With Microsoft Visual C the flags /Zs /showIncludes give us the
+ # necessary output to be able to create dependencies that nmake
+ # (or any 'make' implementation) should be able to read, with a
+ # bit of help. The output we're interested in looks something
+ # like this (it always starts the same)
+ #
+ # Note: including file: {whatever header file}
+ #
+ # This output is localized, so for example, the German pack gives
+ # us this:
+ #
+ # Hinweis: Einlesen der Datei: {whatever header file}
+ #
+ # To accomodate, we need to use a very general regular expression
+ # to parse those lines.
+ #
+ # Since there's no object file name at all in that information,
+ # we must construct it ourselves.
+
+ (my $objfile = shift) =~ s|\.d$|.obj|i;
+ my $line = shift;
+
+ # There are also other lines mixed in, for example compiler
+ # warnings, so we simply discard anything that doesn't start with
+ # the Note:
+
+ if (/^[^:]*: [^:]*: */) {
+ (my $tail = $') =~ s/\s*\R$//;
+
+ # VC gives us absolute paths for all include files, so to
+ # remove system header dependencies, we need to check that
+ # they don't match $abs_srcdir or $abs_blddir.
+ $tail = canonpath($tail);
+
+ unless (defined $depconv_cache{$tail}) {
+ my $dep = $tail;
+ # Since we have already pre-populated the cache with
+ # mappings for generated headers, we only need to deal
+ # with the source tree.
+ if ($dep =~ s|^\Q$abs_srcdir\E\\|\$(SRCDIR)\\|i) {
+ $depconv_cache{$tail} = $dep;
+ }
+ }
+ return ($objfile, '"'.$depconv_cache{$tail}.'"')
+ if defined $depconv_cache{$tail};
+ print STDERR "DEBUG[$producer]: ignoring $objfile <- $tail\n"
+ if $debug;
+ }
+
+ return undef;
+ },
+ 'embarcadero' =>
+ sub {
+ # With Embarcadero C++Builder's preprocessor (cpp32.exe) the -Sx -Hp
+ # flags give us the list of #include files read, like the following:
+ #
+ # Including ->->{whatever header file}
+ #
+ # where each "->" indicates the nesting level of the #include. The
+ # logic here is otherwise the same as the 'VC' scheme.
+ #
+ # Since there's no object file name at all in that information,
+ # we must construct it ourselves.
+
+ (my $objfile = shift) =~ s|\.d$|.obj|i;
+ my $line = shift;
+
+ # There are also other lines mixed in, for example compiler
+ # warnings, so we simply discard anything that doesn't start with
+ # the Note:
+
+ if (/^Including (->)*/) {
+ (my $tail = $') =~ s/\s*\R$//;
+
+ # C++Builder gives us relative paths when possible, so to
+ # remove system header dependencies, we convert them to
+ # absolute paths and check that they don't match $abs_srcdir
+ # or $abs_blddir, just as the 'VC' scheme.
+ $tail = rel2abs($tail);
+
+ unless (defined $depconv_cache{$tail}) {
+ my $dep = $tail;
+ # Since we have already pre-populated the cache with
+ # mappings for generated headers, we only need to deal
+ # with the source tree.
+ if ($dep =~ s|^\Q$abs_srcdir\E\\|\$(SRCDIR)\\|i) {
+ $depconv_cache{$tail} = $dep;
+ }
+ }
+ return ($objfile, '"'.$depconv_cache{$tail}.'"')
+ if defined $depconv_cache{$tail};
+ print STDERR "DEBUG[$producer]: ignoring $objfile <- $tail\n"
+ if $debug;
+ }
+
+ return undef;
+ },
+);
+my %continuations = (
+ 'gcc' => undef,
+ 'makedepend' => "\\",
+ 'VMS C' => "-",
+ 'VC' => "\\",
+ 'embarcadero' => "\\",
+);
+
+die "Producer unrecognised: $producer\n"
+ unless exists $procedures{$producer} && exists $continuations{$producer};
+
+my $procedure = $procedures{$producer};
+my $continuation = $continuations{$producer};
+
+my $buildfile_new = "$buildfile-$$";
+
+my %collect = ();
+if (defined $procedure) {
+ foreach my $depfile (@depfiles) {
+ open IDEP,$depfile or die "Trying to read $depfile: $!\n";
+ while (<IDEP>) {
+ s|\R$||; # The better chomp
+ my ($target, $deps) = $procedure->($depfile, $_);
+ $collect{$target}->{$deps} = 1 if defined $target;
+ }
+ close IDEP;
+ }
+}
open IBF, $buildfile or die "Trying to read $buildfile: $!\n";
open OBF, '>', $buildfile_new or die "Trying to write $buildfile_new: $!\n";
while (<IBF>) {
- $force_rewrite = 0;
last if /^# DO NOT DELETE THIS LINE/;
print OBF or die "$!\n";
- $force_rewrite = 1;
}
close IBF;
print OBF "# DO NOT DELETE THIS LINE -- make depend depends on it.\n";
-foreach (@deps) {
- open IBF,$_ or die "Trying to read $_: $!\n";
- while (<IBF>) {
- print OBF or die "$!\n";
+if (defined $procedure) {
+ foreach my $target (sort keys %collect) {
+ my $prefix = $target . ' :';
+ my @deps = sort keys %{$collect{$target}};
+
+ while (@deps) {
+ my $buf = $prefix;
+ $prefix = '';
+
+ while (@deps && ($buf eq ''
+ || length($buf) + length($deps[0]) <= 77)) {
+ $buf .= ' ' . shift @deps;
+ }
+ $buf .= ' '.$continuation if @deps;
+
+ print OBF $buf,"\n" or die "Trying to print: $!\n"
+ }
+ }
+} else {
+ foreach my $depfile (@depfiles) {
+ open IDEP,$depfile or die "Trying to read $depfile: $!\n";
+ while (<IDEP>) {
+ print OBF or die "Trying to print: $!\n";
+ }
+ close IDEP;
}
- close IBF;
}
+
close OBF;
if (compare_text($buildfile_new, $buildfile) != 0) {
or die "Trying to rename $buildfile_new -> $buildfile: $!\n";
}
+END {
+ # On VMS, we want to remove all generations of this file, in case there
+ # are more than one, so we loop.
+ if (defined $buildfile_new) {
+ while (unlink $buildfile_new) {}
+ }
+}
projects / openssl.git / blobdiff